Determines whether calls to routines are optimized by passing
parametersin registers instead of on the stack.
Only available on IA-32 architecture
- Specifies whether the optimization should be performed and under what conditions. Possible values are:
- The optimization is not performed. Noparametersare passed in registers. They are put on the stack.
- Causesparametersto be passed in registers when they are passed to routines whose definition can be seen in the same compilation unit.
- Causesparametersto be passed in registers, whether they are passed to routines whose definition can be seen in the same compilation unit, or not. This value is only available on Linux* systems.